Interestingly, it looks like the devices will still work (without management or monitoring) after the 30 day grace period when there is no active subscription:   After the 30-day grace period and the subscription is inactive all networks bound to that subscription will come to a disable management state. Disable Management Expected Behavior The following is a description of the expected behavior for the devices on networks that experience a disable management event. Devices in the network will preserve their last known license-compliant configuration prior to getting into a disabled state Administrators will lose the ability to configure the devices via Dashboard (GUI or API) Configuration data will not be displayed via Dashboard (GUI or API) Monitoring and health information  will not be displayed via Dashboard (GUI or API) Devices will not have access to customer-initiated firmware updates from Dashboard (GUI or API) Customers will not receive support for devices ... View more